зеркало из https://github.com/xamarin/ios-samples.git
Add KeyValueObserver sample
This commit is contained in:
Miguel de Icaza
Родитель
1a27d06c5f
Коммит
a020e76247
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//
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// kvo: Shows how to observe property changes on an object
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//
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using System;
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using System.Drawing;
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using MonoTouch.Foundation;
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using MonoTouch.UIKit;
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namespace kvo
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{
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[Register ("AppDelegate")]
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public partial class AppDelegate : UIApplicationDelegate
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{
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UINavigationController topController;
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UIWindow window;
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UILabel label;
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public override bool FinishedLaunching (UIApplication app, NSDictionary options)
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{
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topController = new UINavigationController ();
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topController.View.BackgroundColor = UIColor.Gray;
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label = new UILabel (ComputeLabelRect ()) {
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Text = "Rotate the phone to observe the `bounds' change",
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LineBreakMode = UILineBreakMode.WordWrap,
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Lines = 20,
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BackgroundColor = UIColor.LightGray
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};
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topController.View.AddSubview (label);
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window = new UIWindow (UIScreen.MainScreen.Bounds) {
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RootViewController = topController
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};
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window.MakeKeyAndVisible ();
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//
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// Observe changes to the topController's View property, in this case, we want to
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// observe changes to the "bounds" property (this is the name of the Objective-C
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// property).
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//
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// The changes observed are delivered to "this", which is expected to override
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// the "ObserveValue" method.
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//
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topController.View.AddObserver (observer: this,
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keyPath: new NSString ("bounds"),
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options: NSKeyValueObservingOptions.New,
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context: IntPtr.Zero);
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return true;
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}
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//
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// Override the ObserveValue method on the class that you designate as the observer
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//
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public override void ObserveValue (NSString keyPath, NSObject ofObject, NSDictionary change, IntPtr context)
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{
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var str = String.Format ("The {0} property on {1}, the change is: {2}", keyPath, ofObject, change.Description);
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Console.WriteLine (str);
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label.Text = str;
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label.Frame = ComputeLabelRect ();
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}
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RectangleF ComputeLabelRect ()
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{
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var rect = topController.View.Bounds;
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rect.Inflate (-20, -80);
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return rect;
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}
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static void Main (string[] args)
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{
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UIApplication.Main (args, null, "AppDelegate");
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}
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}
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}
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>UISupportedInterfaceOrientations</key>
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<array>
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<string>UIInterfaceOrientationPortrait</string>
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<string>UIInterfaceOrientationLandscapeLeft</string>
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<string>UIInterfaceOrientationLandscapeRight</string>
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</array>
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</dict>
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</plist>
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<?xml version="1.0" encoding="utf-8" ?>
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<SampleMetadata>
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<ID>3E74DD9C-7B83-4A40-A746-B73C373D84A1</ID>
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<IsFullApplication>true</IsFullApplication>
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<Level>Intermediate</Level>
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<Tags>Fundamentals</Tags>
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</SampleMetadata>
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Двоичный файл не отображается.
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После Ширина: | Высота: | Размер: 93 KiB |
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<?xml version="1.0" encoding="utf-8"?>
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<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">iPhoneSimulator</Platform>
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<ProductVersion>10.0.0</ProductVersion>
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<SchemaVersion>2.0</SchemaVersion>
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<ProjectGuid>{AAC33071-D84F-4543-B45F-440CC9BD560E}</ProjectGuid>
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<ProjectTypeGuids>{6BC8ED88-2882-458C-8E55-DFD12B67127B};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
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<OutputType>Exe</OutputType>
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<RootNamespace>kvo</RootNamespace>
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<AssemblyName>kvo</AssemblyName>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|iPhoneSimulator' ">
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
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<DefineConstants>DEBUG;</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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<ConsolePause>false</ConsolePause>
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<MtouchDebug>true</MtouchDebug>
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<MtouchProfiling>true</MtouchProfiling>
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<MtouchLink>None</MtouchLink>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|iPhoneSimulator' ">
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<DebugType>none</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\iPhoneSimulator\Release</OutputPath>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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<ConsolePause>false</ConsolePause>
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<MtouchLink>None</MtouchLink>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|iPhone' ">
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\iPhone\Debug</OutputPath>
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<DefineConstants>DEBUG;</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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<ConsolePause>false</ConsolePause>
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<CodesignKey>iPhone Developer</CodesignKey>
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<MtouchDebug>true</MtouchDebug>
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<MtouchProfiling>true</MtouchProfiling>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|iPhone' ">
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<DebugType>none</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\iPhone\Release</OutputPath>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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<ConsolePause>false</ConsolePause>
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<CodesignKey>iPhone Developer</CodesignKey>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="System" />
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<Reference Include="System.Xml" />
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<Reference Include="System.Core" />
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<Reference Include="monotouch" />
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</ItemGroup>
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<ItemGroup>
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<None Include="Info.plist" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="AppDelegate.cs" />
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</ItemGroup>
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<Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
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</Project>
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Microsoft Visual Studio Solution File, Format Version 11.00
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# Visual Studio 2010
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "kvo", "kvo.csproj", "{AAC33071-D84F-4543-B45F-440CC9BD560E}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|iPhoneSimulator = Debug|iPhoneSimulator
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Release|iPhoneSimulator = Release|iPhoneSimulator
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Debug|iPhone = Debug|iPhone
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Release|iPhone = Release|iPhone
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{AAC33071-D84F-4543-B45F-440CC9BD560E}.Debug|iPhone.ActiveCfg = Debug|iPhone
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{AAC33071-D84F-4543-B45F-440CC9BD560E}.Debug|iPhone.Build.0 = Debug|iPhone
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{AAC33071-D84F-4543-B45F-440CC9BD560E}.Debug|iPhoneSimulator.ActiveCfg = Debug|iPhoneSimulator
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{AAC33071-D84F-4543-B45F-440CC9BD560E}.Debug|iPhoneSimulator.Build.0 = Debug|iPhoneSimulator
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{AAC33071-D84F-4543-B45F-440CC9BD560E}.Release|iPhone.ActiveCfg = Release|iPhone
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{AAC33071-D84F-4543-B45F-440CC9BD560E}.Release|iPhone.Build.0 = Release|iPhone
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{AAC33071-D84F-4543-B45F-440CC9BD560E}.Release|iPhoneSimulator.ActiveCfg = Release|iPhoneSimulator
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{AAC33071-D84F-4543-B45F-440CC9BD560E}.Release|iPhoneSimulator.Build.0 = Release|iPhoneSimulator
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EndGlobalSection
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GlobalSection(MonoDevelopProperties) = preSolution
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StartupItem = kvo.csproj
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EndGlobalSection
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EndGlobal
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